mirror_zfs/config/user-libssl.m4

dnl #
dnl # Check for libssl. Used for userspace password derivation via PBKDF2.
dnl #
AC_DEFUN([ZFS_AC_CONFIG_USER_LIBSSL], [
	LIBSSL=

	AC_CHECK_HEADER([openssl/evp.h], [], [AC_MSG_FAILURE([
	*** evp.h missing, libssl-devel package required])])

	AC_SUBST([LIBSSL], ["-lssl -lcrypto"])
	AC_DEFINE([HAVE_LIBSSL], 1, [Define if you have libssl])
])
Encryption patch follow-up * PBKDF2 implementation changed to OpenSSL implementation. * HKDF implementation moved to its own file and tests added to ensure correctness. * Removed libzfs's now unnecessary dependency on libzpool and libicp. * Ztest can now create and test encrypted datasets. This is currently disabled until issue #6526 is resolved, but otherwise functions as advertised. * Several small bug fixes discovered after enabling ztest to run on encrypted datasets. * Fixed coverity defects added by the encryption patch. * Updated man pages for encrypted send / receive behavior. * Fixed a bug where encrypted datasets could receive DRR_WRITE_EMBEDDED records. * Minor code cleanups / consolidation. Signed-off-by: Tom Caputi <tcaputi@datto.com> 2017-09-12 23:15:11 +03:00			`dnl #`
			`dnl # Check for libssl. Used for userspace password derivation via PBKDF2.`
			`dnl #`
			`AC_DEFUN([ZFS_AC_CONFIG_USER_LIBSSL], [`
			`LIBSSL=`

			`AC_CHECK_HEADER([openssl/evp.h], [], [AC_MSG_FAILURE([`
Fix config issues: frame size and headers 1. With various (debug and/or tracing?) kernel options enabled it's possible for 'struct inode' and 'struct super_block' to exceed the default frame size, leaving errors like this in config.log: build/conftest.c:116:1: error: the frame size of 1048 bytes is larger than 1024 bytes [-Werror=frame-larger-than=] Fix this by removing the frame size warning for config checks 2. Without the correct headers included, it's possible for declarations to be missed, leaving errors like this in the config.log: build/conftest.c:131:14: error: ‘struct nameidata’ declared inside parameter list [-Werror] Fix this by adding appropriate headers. Note: Both these issues can result in silent config failures because the compile failure is taken to mean "this option is not supported by this kernel" rather than "there's something wrong with the config test". This can lead to something merely annoying (compile failures) to something potentially serious (miscompiled or misused kernel primitives or functions). E.g. the fixes included here resulted in these additional defines in zfs_config.h with linux v4.14.19: Also, drive-by whitespace fixes in config/* files which don't mention "GNU" (those ones look to be imported from elsewhere so leave them alone). Reviewed by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Chris Dunlop <chris@onthe.net.au> Closes #7169 2018-02-15 23:58:23 +03:00			`*** evp.h missing, libssl-devel package required])])`
Encryption patch follow-up * PBKDF2 implementation changed to OpenSSL implementation. * HKDF implementation moved to its own file and tests added to ensure correctness. * Removed libzfs's now unnecessary dependency on libzpool and libicp. * Ztest can now create and test encrypted datasets. This is currently disabled until issue #6526 is resolved, but otherwise functions as advertised. * Several small bug fixes discovered after enabling ztest to run on encrypted datasets. * Fixed coverity defects added by the encryption patch. * Updated man pages for encrypted send / receive behavior. * Fixed a bug where encrypted datasets could receive DRR_WRITE_EMBEDDED records. * Minor code cleanups / consolidation. Signed-off-by: Tom Caputi <tcaputi@datto.com> 2017-09-12 23:15:11 +03:00
			`AC_SUBST([LIBSSL], ["-lssl -lcrypto"])`
			`AC_DEFINE([HAVE_LIBSSL], 1, [Define if you have libssl])`
			`])`